Question
Define nuclear fission reaction.
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A polythene piece rubbed with wool is found to have a negative charge of $3 \times 10^{-7} C$.
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What is the energy of a hydrogen atom in the first excited state if the potential energy is taken to be zero in the ground state?
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→A point charge $+10\ \mu\ C$ is a distance $5\ cm$ directly above the centre of a square of side $10\ cm,$ as shown in Fig. $1.34.$ What is the magnitude of the electric flux through the square?
$($Hint: Think of the square as one face of a cube with edge $10\ cm.)$
→$($Hint: Think of the square as one face of a cube with edge $10\ cm.)$
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→The following figure shows the V-I characteristics of a semiconductor diode.
i. Identify the semiconductor diode used.
ii. Draw the circuit diagram to obtain the given characteristics of this device.
iii. Briefly explain how this diode can be used as a voltage regulator.
i. Identify the semiconductor diode used.
ii. Draw the circuit diagram to obtain the given characteristics of this device.
iii. Briefly explain how this diode can be used as a voltage regulator.
- Calculate the equivalent resistance of the given electrical network between points A and B.
- Also calculate the current through CD and ACB, if a 10 V d.c. source is connected between A and B, and the value of R is assumed as 2 Ω.
